Main Entry:

ra·tio

Pronunciation:

\ˈrā-(ˌ)shō, -shē-ˌō\

Function:

noun

Inflected Form(s):

plural ra·tios

Etymology:

Latin, computation, reason — more at reason

Date:

1660

1 a: the indicated quotient of two mathematical expressions b: the relationship in quantity, amount, or size between two or more things : proportion2: the expression of the relative values of gold and silver as determined by a country's currency laws